真彩色广义相移数字全息成像设计

True Color Imaging Design in Generalized Phase-shifting Digital Holography

设计了使用一个单色CCD完成真彩色相移数字全息记录的装置和一种各色光融合再现成像的方法,实现了真彩色全息记录与成像。在数字全息记录光路中引入红绿蓝3种色光激光光源、3个扩束准直系统和快门、1个反射镜、2个合束器,实现了3种光源的切换。找到不同色光像像素大小与波长的关系来完成不同色像大小的调整。使用分辨率板和硬币为目标物进行光学实验,验证了各种色光融合的规律和该真彩色全息成像方法的可行性与有效性。

By analyzing the generalized phase-shifting holography imaging law of different color light,a true colorful phase-shifting digital hologram recording setup and the method of color fusion of reconstructed images are designed by using a singular monochromatic CCD,and the true color holography recording and imaging design are realized. Three laser sources of red,green,and blue,three beam expanding and collimating system with their shutters,one reflector,and two beam combiners are introduced to the digital holography recording arrangement to realize the alternating of light source. The relationship between the pixel size of different color image and the wavelength of illuminating light is achieved to adjust the size of different color image. Resolution target and coin are used as the objects in the experiments carried out. The fusion law of different color image and the feasibility and effectiveness of the true color holography method are verified by these optical experiments.